One site is missing from WordPress Dashboard

I have multiple sites on WordPress network-supernova.droidzone.in, starburst.droidzone.in, blog.droidzone.in and others. Of these, blog.droidzone.in is missing from the Dashboard list of sites. wp-admin with the url works however, and so does displaying the site. It’s not really a big issue, but I’m wondering if there’s some kind of setting somewhere that I’ve messed up.